News from NASA:
The sun emitted a significant solar flare, peaking at 1:48 p.m. EDT March 29, 2014, and NASA's Solar Dynamics Observatory captured images of the event. Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can disturb the atmosphere in the layer where GPS and communications signals travel.
NASA is planning a night landing on the sun to investigate. Quoting a senior NASA scientist, "Obviously, it's harder to do in the dark but it's far too hot during the day."